package cn.tiansu.eway.kylinengine.model;

import java.util.HashSet;
import java.util.Set;

import org.apache.commons.lang.StringUtils;

public class AA
{
	public static void main(String[] args)
	{
		Set<String> set = new HashSet<String>();
		set.add("1");
		set.add("2");
		System.out.println(StringUtils.join(set, ","));
	}
}
